private static StringBuilder BuildFromCellQuery(CellQuery query)
{
bool hasTimestamp = query.EndTimestamp.HasValue &&
(!query.BeginTimestamp.HasValue || query.BeginTimestamp.Value < query.EndTimestamp.Value);
StringBuilder uriBuilder = BuildFromDescriptor(query);
bool columnsMissing = query.Cells == null || query.Cells.All(cell => string.IsNullOrEmpty(cell.Column));
if (columnsMissing && !hasTimestamp)
{
return(SetMaxVersions(query.MaxVersions, uriBuilder));
}
if (!columnsMissing)
{
HBaseCellDescriptor[] validCells = query.Cells.Where(cell => !string.IsNullOrEmpty(cell.Column)).ToArray();
HBaseCellDescriptor firstCell = validCells.First();
uriBuilder.AppendFormat(_appendSegmentFormat, firstCell.Column);
if (!string.IsNullOrEmpty(firstCell.Qualifier))
{
uriBuilder.AppendFormat(_appendQualifierFormat, firstCell.Qualifier);
}
foreach (HBaseCellDescriptor cell in validCells.Skip(1))
{
uriBuilder.AppendFormat(_appendRangeFormat, cell.Column);
if (!string.IsNullOrEmpty(cell.Qualifier))
{
uriBuilder.AppendFormat(_appendQualifierFormat, cell.Qualifier);
}
}
}
else
{
uriBuilder.AppendFormat(_appendSegmentFormat, _wildCard);
}
if (hasTimestamp)
{
if (query.BeginTimestamp.HasValue)
{
uriBuilder.AppendFormat(_appendSegmentFormat, query.BeginTimestamp);
uriBuilder.AppendFormat(_appendRangeFormat, query.EndTimestamp);
}
else
{
uriBuilder.AppendFormat(_appendSegmentFormat, query.EndTimestamp);
}
}
return(SetMaxVersions(query.MaxVersions, uriBuilder));
}
private XElement XmlForCell(Cell cell)
{
Identifier identifier = cell.Identifier;
HBaseCellDescriptor cellDescriptor = identifier != null ? identifier.CellDescriptor : null;
string column = cellDescriptor != null ? cellDescriptor.Column : null;
string qualifier = cellDescriptor != null ? cellDescriptor.Qualifier : null;
long? timestamp = identifier != null ? identifier.Timestamp : null;
var cellXml = new XElement(_cellName, new XText(_codec.Encode(cell.Value)));
if (!string.IsNullOrEmpty(column))
{
cellXml.Add(new XAttribute(_columnName, _codec.Encode(string.Format(_columnFormat, column, qualifier))));
}
if (timestamp.HasValue)
{
cellXml.Add(new XAttribute(_timestampName, timestamp.Value));
}
return(cellXml);
}